diff --git a/ProcessLib/LIE/HydroMechanics/CreateHydroMechanicsProcess.cpp b/ProcessLib/LIE/HydroMechanics/CreateHydroMechanicsProcess.cpp
index 85e695df9be7d8a439eb43116b664c2044173d35..b0d4873ef31ba60009ce164ad03408df4441b078 100644
--- a/ProcessLib/LIE/HydroMechanics/CreateHydroMechanicsProcess.cpp
+++ b/ProcessLib/LIE/HydroMechanics/CreateHydroMechanicsProcess.cpp
@@ -271,7 +271,7 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
 
     std::array const requiredMediumProperties = {
         MaterialPropertyLib::reference_temperature,
-        MaterialPropertyLib::permeability, MaterialPropertyLib::porosity,
+        MaterialPropertyLib::permeability,
         MaterialPropertyLib::biot_coefficient};
     std::array const requiredFluidProperties = {MaterialPropertyLib::viscosity,
                                                 MaterialPropertyLib::density};